add docker build workflow

Author: haarg

.github/workflows/build-production-container.yml

@@ -0,0 +1,48 @@
+---
+name: Build deployment container
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+    branches:
+      - master
+  workflow_dispatch:
+jobs:
+  docker:
+    runs-on: ubuntu-22.04
+    name: Docker Push
+    steps:
+      - uses: actions/checkout@v4
+      - name: Log in to Docker Hub
+        uses: docker/login-action@v3
+        with:
+          username: ${{ secrets.DOCKER_HUB_USER }}
+          password: ${{ secrets.DOCKER_HUB_TOKEN }}
+      - name: Build test image
+        uses: docker/build-push-action@v2
+        with:
+          tags: metacpan/metacpan-api-v0-shim:test
+          target: test
+          push: false
+      - name: Run Perl tests
+        run: docker run -i metacpan/metacpan-api-v0-shim:test
+      - name: Docker meta
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: metacpan/metacpan-api-v0-shim
+          flavour: |
+            latest=false
+          tags: |
+            type=sha
+            type=ref,event=branch
+            type=ref,event=pr
+            type=raw,value=latest,enable={{is_default_branch}}
+      - run: echo '${{ steps.meta.outputs.json }}'
+      - name: Build and push
+        uses: docker/build-push-action@v5
+        with:
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+          annotations: ${{ steps.meta.outputs.annotations }}